Support for centrifuges



1940- A. o. M coLLuM arm.

SUPPORT FQR CENTRIFUGBS 4 Sheets-Sheet 1 Original Filed April 9, 1937fiz/ M'ew Q .M'Qllum i ZJZoueZZ Feb. 13, 1940. A O MOCQLLUM AL 2,190,455

SUPPORT FOR CENTRIFUGES Original Filed April 9, 1957; 4 Sheets-Sheet 2Feb.- 13, 1940.

A. O. M COLLUM ET AL SUPPORT FOR CENTRIFUGES Origiizal Filed April 9,1937 Sheets-Sheet 3 Z @444 {1 v gig/s Feb. 13, 1940. o. McCOLLUM ET AL2,190,455

SUPPORT FOR CENTRIFUGES Original Filed April 9, 193'? 4 Sheets-Sheet 4'OWe if %@@M Q- 7 j Patented Feb. 13, 1940 SUPPORT FOR CENTRIFUGESAndrew 0. Mccolium and Victor J. Lovett, De-

.trolt, Micln, asslgnors to Bendix Home Applian'cea, Inc., Detroit,Mich, a c rporation of Delaware Application Aprils, 1937, Serial No.135,954 Renewed August 21, 1939 The present invention relates to asupport'for a centrifuge and particularly to a'support for a centrifugesuch as a centrifugal extractor havin a rotatable cylinder adapted tocontain textiles 'from which liquid isto be extracted.

It is a well known fact that unbalance of a rotating body causesvibrations which may be of an amplitude such that if continued over aperiod of time the supporting framework eventually would be destroyed.Rotating bodies whose weight remains fixed may be balanced by well knownmethods to eliminate undesired vibrations, but where the rotating body,carries variable loads, such, for instance, as the rotating cylinder 'ofa centrifugal extractor, the degree of unbalance may vary considerably.The even distribution within the cylinder-of textiles or othermaterials, from which liquid is to be extracted, necessary to eliminateall vibration, is not practicable because such distribution is difficultto attain as well as time consuming. Automatic balancing means have beensuggested but, because of the nature of the complicated mechanismrequired, theseare quite expensive.

It is the primary object of-the present invention to provide a new andimproved substantially rigid supporting means for a centrifuge rotatableabout a horizontal axis. g

A further object of the invention is to provide a new and improvedsupporting means for a centrifuge secured to one end of a relativelyshort shaft 1 urnaled in a pair of spaced-apart bear- 7 ings, co prisinga. support for the bearing nearest the centrifuge constructed towithstand forces in a plane perpendicular to the axis of rotation and asecond support constructed also to resist forces in a planeperpendicular to the axis of rotation' and adapted particularly toprevent undue gyratory motion of the shaft.

40 The support 'of the present invention comprises, in brief, a base, anapertured support mounted thereon having a substantially triangularshape supporting at its upper .end the bearing nearest the centrifugeandproviding lever arms of sum-. cient length on-either side of thecenter line of the shaft to withstand forces in a plane perpen dicularto the axis of rotation created by rotation of the centrifuge, andasupport for therear bearing secured to the first mentioned support a 0and extending diagonally downward through the aperture therein to apoint of attachment on said base below the end of the centrifugefarthest from the bearings." l

Other advantages'and objects of the present 65 invention will becomeapparent from the ensuing description of a centrifugal extractorembodying a preferred form and a modification-of the sup-'- port. Thesespecific embodiments and description thereof are merely for the purposeof disclos- 5 ,ing illustrative embodiments of the invention, and

not'to impose limitations on the claims.

In the accompanying description reference will be had to the drawings,in whicht.

Fig. 1 is a side elevation of the support, with .the centrifuge anddriving means therefor shown Fig. 5 is a partial cross-section view,taken along the line 55 of Fig.2;

Fig. 6 is a side elevational view, partially in section, of a modifiedform of support-embodying the present invention; and

Fig. '7 is a front elevation of the support shown in Fig. 6. M

The supporting means of the present invention comprises a front bearingsupport ll a rear bearing support If, both mounted upon a base 13, andassembled in a manner to be described fully hereinafter to form arigidsupport for a centrifuge I4 mounted for rotation on a horizontalaxis. The centrifuge I4 is illustrated as a cylinder forming therotating part of a washing apparatus, but it should be apparent to thoseskilled in the art that, the invention is not limited to thisspecifically illustrated embodiment. The

' cylinder is surrounded by a stationary casing l5,

and is secured to a hub it of zinc, cast on the end of, a horizontallydisposed shaft I! that is mounted in cantilever fashion for rotation'inthe bearing supports ii and I2. From Fig. 1' it may be seen that theshaft I1 is relatively short as compared to the'length of the cylinderandrthat it is located above the rear end of the base l3 at' a heightapproximately equal to the diameter of the cylinder; The rear bearing I2is substantially above the rear end of the base [3 while the frontbearing is spaced 1 forward therefrom. about one-quarter of the lengthof the'base. 'I he front end of the cylinder H is substantially over thefront end of the base.

Referring particularly to Fig. 3, it maybe seen that the cylinder.ll-,--the particular construction of which forms no part of thisinvention, comprises a center panel I9 and a rear panel (the front panelnot being shown), mounted upon a plurality of spokes 2I, suitablyattached to the hub I6. The cylinder is provided with peripheralperforations 22, in accordance with well known principles of liquidextraction.

The hub I6 is secured to shaft I'I against longitudinal and rotativedisplacement by annular groove 22 and longitudinal knurling 23,respectively. It is prevented from wearing against the casing I5 by athrust washer 24. Leakage of liquid along the shaft from within thecasing I5 is prevented by a plurality of flexible sealing rings 25,bearing tightly against the shaft and confined by an annular resilientrubber ring 26, to which they are bonded.

The sealing means is held in place between an annular, recessed shoulder21, formed on casing I5, and a similar opposing shoulder 28 formed on anannular retaining ring 29. The casing I5 and retaining ring 29 aresecured to the front bearing support I I by a plurality of bolts 30. Anannular packing strip 3| is interposed between the casing. I5 andsupport I I, in order to provide a slightly resilient connection betweenthese two members and at the same time to provide a liquid-tight sealaround the holes through which bolts 30 pass.

The shaft is journaled for rotation in a pair of spaced-apartself-oiling bearings 33 and 34, mounted in the front and rear bearingsupports II and I2, respectively. The details of the bearing mountingare clearly shown in Fig. 3, but before proceeding with the descriptionof these details, it may be well to point out the features of thesupports themselves.

Referring particularly to Figs. 1 and 2, it may be noted that thesupporting members are formed of comparatively thin steel stampings.suitably formed and welded together to provide an integral,substantially rigid support for the rotatable cylinder I4. Theparticular construction of the supports from stampings welded togetherin the manner to be described hereinafter and the method of mounting thebearings thereon form no part of the present invention, but aredisclosed andv claimed in the copending application of Albert H.Haberstump, Serial No. 135,955, filed April 9, 1937.

The front bearing support II is made of a substantially triangularstamping 36 and a substantially U-shaped stamping 31, having a pair oflegs 38 and 39, of which the former is welded to member 36 in a mannerto be described specifically below.

The triangular stamping 36 has a suflicient width at the base, to whichit is'flxedly secured by welding, to provide lever arms of sufficientlength on either side of the center line of cylinder shaft IT towithstand forces in a plane perpendicular to the rotation of cylinder I4when the latter s rotated at high speeds, and particularly when thetextiles contained therein are not evenly distributed.

The rear bearing support I2 is made 'of a stamping 40 having asubstantially U-shaped cross-section and provided with an upper verticalportion 4I welded to leg 39 of the U-shaped intermediate member 3I. Thestamping 40 is relatively narrow and lies substantially in aplanepassing vertically through the axis of rotation of shaft II. At thelevel of the bottom of the U-shapedintermediate member 31 the supportingmember 40 is inclined toward the inner bearing support II as indicatedat 42. This inclined portion passes through a central aperture 43 formed,in member 36 and thence diagonally downwardly below the stationarycasing I5, as indicated 'at 44, to a point of attachment to the base.The point of attachment is substantially directly belowthat end ofcylinder I4 farthest removed from the bearings.

The three members 36, 31 and 40 from which the bearing support isfabricated are formed to provide a rigid, well braced structure. Theyare formed with complementary flanges providing additional rigidity aswell as a convenient means for securing the parts together in a suitablemanner, such as welding.

The triangular member 36 is provided with a peripheral U-shaped channelconsisting of an inclined portion 46 extending toward the centrifuge(away from the reader as viewed in Figs. 2 and 5), a flat portion 41lying in a line parallel to the central portion, and a peripheralportion 43 lying at right angles to the central portion and providedwith a flange 49.

The intermediate central portion 5| of member 36 is inclined upward andtoward the centrifuge to meet portion 41 of the channel, as indicated byreference numeral 52. The two portions then extend backward and upwardat the same angle and terminate in an upper vertical portion 53 joiningthe'peripheral portion 48. The" upper vertically extending portion 53 isperforated and provided with an annular inturned flange 54 for thepurpose that will appear shortly.

The form of the U-shaped intermediate member 31 is clearly disclosed inFig. 4 and consists of legs 38 and 39, the former of which is providedwith projections 56 and 51 extending downward and outward at rightangles thereto. The.latter in turn are provided'with right angleflanges,

having vertical portions 58 and 59 and inclined portions 60 and 6|,respectively. Legs 38 and 39 are provided with apertures having flanges62 and 63 extending in opposite directions from the respective legs.

Referring now more particularly to Figs. 1, 2 and 3, it may be seen thatcomplementary portions on the U-shaped intermediate and triangularmembers are provided by (1) the upper end of leg 38 and flange 49, (2)vertically extending flanges 58 and 59 and the vertically extendingportion 53, and (3) inclined flanges 60 and 6I and the inclined portion5|.

Before the above portions ar secured together. a bearing sleeve 64,provided with an annular ring of oil-containing compound 65 and annularinternal shoulders 66 at its ends for the reception of the oppositelydisposed flanges 54 and 62, is inserted therebetween. Thereafter thecomplementary portions are welded together to form a unitary rigid frontbearing support capable of resisting substantially all forces in a planepassing therethrough at an angle substantially perpendicular to the axisof rotation.

Similar complementary portions are provided on leg 39 of the U-shapedmember and the diagonal member 40 forming the rear bearing support. Thelatter is given considerable having an inturned flange I extendingtoward flange 83 Between these flanges is a second bearing sleeve II,similar in all respects to sleeve 84, having opposite inner annularshoulders I2 into which the flanges extend securely to hold the, bearingsleeve in place.

Longitudinal movement of the shaft in the bearings is prevented by a Cwasher I3 positioned in a groove I4 formed at the end of shaft II. Aresilient movement-restraining means for the shaft is provided by aspring washer I5 held between washers I8 and 11, one of which abutsagainst the rear bearing 34 and the other against the 0 washer.

In order to give the bearing support additional rigidity, theinclineddiagonal member II! is secured to flanges 56 and 51 formed on leg 38 ofthe intermediate U-shaped member and t0 inclined right-angled flanges I8and 19 formed on the sides and bottom of. the aperture 43. The lowerportions of flanges 58 and 51 are secured to member by welding them torectangular ears 80 and 8| formed integral with the latter substantiallydirectly below the curved.

portion of the intermediate member. The right-angled flanges I8 and I!are formed with internal dimensions corresponding to the externaldimensions of the U-shaped diagonal member I! so that the latter neststherein nearthe point where it passes through or intersects thetriangular member 38.

The above described construction provides a hollow, box-like bearingsupport capable of resisting forces set up by rotation of cylinder I 4when the distribution of textiles therein is such as to cause anunbalance thereof. 'The support is made of only three preformed membersand requires but a slight amount of weldingin its fabrication. Theconstructionis such that the parts can be made and assembled veryeconomically.

The cylinder shaft is rotated by means of a pulley 83 secured to theshaft intermediate the bearings 33 and 34. The pulley is rotated by a Vbelt 85 driven by a pulley 88 rotated by a motor 81 suitably mounted ina depressed portion 88 formed on base I3. The driving pulley 86 andmotor 81 are located on opposite sides of the triangular supportingmember 38, which is provided with a third aperture 89 through which thedriving connection extends. This aperture is made sufficiently large toenable the motor 81 and driving pulley 88 to be removed for repairs orcleaning simply by releasing the belt and loosening the motor from thebase.

It should be noted that the construction of the support is such that anendless belt 85 may be used since the belt does not have to be threadedthrough any of the parts comprising the supis provided with integraltapered side arms or flanges 94 secured at their lower ends to theverticalisides of the Up-shaped diagonal support I 48. Member 82 is alsosecured to a curved endclosing portion 95 provided on support 48,thereby adding further to the rigidity of the support.

. The apparatus described above may be se-' cured to. a floor or thelikeby means of a bolt (not shown) passing through a central opening 96formed in the base I3. It has been found satisfactory to use only thesingle centrally locatedbolt, but it is obvious thata plurality of themmay be used just as well.

- The support itself has proved to be substantially rigid and,therefore, satisfactory in actual use and has carried eccentric loads atsubstantial speeds without the creation of destructive vibration. Inoperation the cylinder I4 is rotated at a desired speed by the motor 81,which I created may be substantial.

These forces tend 'to cause a shift in the axis of rotation whereby theshaft assumes a gyra- I tory as well as a rotary motion. The frontsupport, because of its vertical position and triangular shape,preventsradial movement of the shaft because of its ability to resist bothverti- Q cally acting forces and side thrust. The rear support,beingrelatively narrow and constructed .of relatively thin steel, flexesslightly and thereby .permits the shaft to assume a gyratory motion.However, the rear support is sufficiently rigid to prevent unduegyratory motion. Thus,

some of the' forces created'by rotation of an eccentric load areabsorbed in the frame, whereby the stress placed upon the shaft isreduced. If the bearings were mounted in perfectly rigid supports, theshaft would be subjected to considerable stress and there would begreater likelihood of its crystallizing and breaking. However, byconstructing the support in the manner described, the possibility ofcrystallization and breakage of the shaft is greatly reduced.

The casing I5-is not affected by the gyratory movement of the shaftbecause itis supported upon the front bearing support and the support32, both of which are substantially rigid. In practice the casing I5 andcentrifuge-are surrounded by a casing mounted on the base. I3 and it,like the casing I5, remains substantially unaffected, by the movement ofthe shaft and rear bearing support.

In the modification illustrated in Figs.v 6 and '7, the support isfabricated in a somewhat simpler fashion. The support comprises a frontbearing support III and a rear bearing support 2, both mounted on a baseH3 and assembled to form a rigid support for a centrifuge (not shown)rotatable on a horizontal .axis.

The centrifuge is. driven by a shaftII l journaled for rotation in apair of spaced-apart selfaligningbearings H5 and H6 mounted on supportsIII and ,2, respectively. The bearings are identical in, constructionand comprise bearing portions II'I through which the shaft extends.These bearing portions are mounted in sleeves I I8 having sphericalouter surfaces. The sleeves are mounted in standards I20 each comprisingtwo halves secured together and formed with legs I2I suitably fastenedto the tops of supports I I I and H2.

The shaft I I4 is held against longitudinal movement by a C washer I22positioned in a groove I23 formed at the end of shaft Ill. A resilientmovement-restraining means is provided by a 7 spring washer I24 held.between washers I25 and I26, one of which abuts against. the rearbearing II! and the other against the C washer.

The supports are forined of relatively thin steel stampings suitablyformed and then welded-together to form a rigid'supporting structure.The front support III is made of a substantially triangular stamping I30provided with a peripheral flange I 3| extending at right anglestherefrom in a direction away from the centrifuge. It is welded at itslower end to the base H3 in a position perpendicular to the axis ofrotation of shaft II4.

The front support I30 is provided with a central/ aperture I32 providedwith vertical side flanges I34 and flanged apertures I35 and I36 onopposite sides of aperture I32 to give the support additional rigidity.

The rear support II2 may be seen to consist of a relatively narrowU-shaped diagonal member lying substantially in a plane perpendicular tothe base and passing through the axis of rotation :1 shaft II4. Itcomprises an upper vertical portion I3'I, an intermediate diagonalportion I38 extending through the central aperture I32 and a bottomdiagonal portion I39 secured to the base at a point below thecentrifuge. The upper end of the vertical portion I3! is closed at I40to provide a flat surface for bearing H5.

The intermediate portion I38 of the rear support has its side wallswelded to the flanges I34 formed on the vertical support I II at thecentral aperture and is further connected to the support by a strut I4Iconnecting the two above the aperture. The strut consists of diagonalportion I42 lying at right angles to the intermediate portion I38 of therear support and a vertical portion I 43. These portions havesubstantially U-shaped cross-sections. The lower end of portion MI isclosed, as shown at I44, and securely welded to the rear support. Theupper portion I43 has transverse flanges I45 formed thereon so that itmay be securely welded to the vertical support I30. ture I46 near itsapex to facilitate welding of the closed end I44 of the strut to therear support.

The vertical portion I 43 of the strut I4I has a U-shaped cross-sectionup to the point where it abuts the upper end of flange I3I. Thereafterthe strut continues as a flat piece bent, first horizontally over thetop of flange I3I, as shown at I41, and then vertically, as shown atI48. The latter is provided with an opening I49 through which the shaftII4 extends and a plurality of openings I50 for bolts used to secure thestationary casing (not shown) of the washing machine.

The shaft is adapted to be rotated through a pulley I5I secured to shaftII4 intermediate the bearings H5 and H6.

The front support for the casing, corresponding to support 92. of thefirst modification, has been omitted from Figs. 6 and 7, but it isapparent that such a support may be secured to the front end of base H3.

The base I I3 may be secured to a floor or other supporting structure bymeans of a bolt passing through a hole I52 located centrally of thebase. Additional rigidity is given the base by a transverse channelmember I53 extending across the sides and below the top thereof.

From the above description of the modified support it may be seen thatit incorporates all the essential features of the present invention and,like the first described embodiment, forms a rigid support for thecentrifuge.

While two embodiments of the invention have been described above, itshould be apparent that the invention is adapted to be embodied in otherspecific constructions. Therefore, it should be The latter is providedwith an aperunderstood the invention is not limited to the specificdetails illustrated in the drawings and described above and that thescope of the invention is limited solely by the following claims.

We claim:

1. Apparatus comprising a centrifuge having a shaft mounted for rotationabout a substantially horizontal axis, in combination with a supportincluding a base, a first member substantially triangular in shape andmounted in vertical position on said base and supporting said shaft at apoint adjacent the centrifuge and a second member lying substantially ina vertical plane passing through the axis of rotation and extendingdiagonally downward between the inclined sides of said first mentionedmember to said base and supporting said shaft at a point spaced fartherfrom said centrifuge than the first mentioned point.

2. Apparatus comprising a centrifuge having a shaft mounted for rotationabout a substantially horizontal axis, in combination with a supportincluding a base, a first member mounted in a vertical position on saidbase and supporting said shaft at a point adjacent the centrifuge, saidmember being provided with a central aperture, and a second member lyingsubstantially in avertical plane passing through the axis of rotationand extending diagonally downward through said aperture to said base andsupporting said shaft at a point spaced farther from said centrifugethan said first mentioned point.

3. Apparatus comprising a. centrifuge having a shaft mounted forrotation about a substantially horizontal axis, in combination with asupport including a base, a first member substantially triangular inshape and mounted in vertical position on said base and supporting saidshaft at a point adjacent the centrifuge, and a second member lyingsubstantially in a vertical plane passing through the axis of rotationandextending diagonally downward between the inclined sides of saidfirst mentioned member to a point of attachment to the base andsupporting said shaft at a point spaced farther from said centrifugethan the first mentioned point, said point of attachment of said secondmember with said base being located below the centrifuge.

4. Apparatus comprising a centrifuge of predetermined length anddiameter, a shaft driving said centrifuge and mounted for rotation on asubstantially horizontal axis, and a support including, in combination,a first member mounted in a vertical position on said base andsupporting said shaft at a point adjacent the centrifuge, and a secondmember lying substantially in a vertical plane passing through the axisof rotation and extending diagonally downward between the sides of saidfirst mentioned member to a point of attachment to the base andsupporting said shaft at a point spaced farther from said centrifugethan said first mentioned point, said point of attachment of said secondmember with said base being located substantially below the front end ofsaid centrifuge.

5. Apparatus comprising a centrifuge having a shaft mounted for rotationon a substantially horizontal axis, in combination with a supportincluding a base, a first member mounted in a vertical position on saidbase and supporting said shaft at a point adjacent the centrifuge, saidmember being provided with a centrally located aperture, and a secondmember supporting said shaft at a point spaced farther from saidcentrifuge than the first mentioned point, said second member lyingsubstantially in a plane passing vertically through the axis of rotationand extending diagonally downward through said aperture to said base,and secured to said first member at said aperture and to said base.

6. Apparatus comprising a centrifuge having a shaft mounted for rotationon a substantially horizontal axis, in combination with a supportincluding a base, a first member mounted in a vertical position on saidbase and supporting said shaft at a point adjacent the centrifuge, saidmember being provided with a centrally located flanged aperture, and asecond substantially U- shaped member supporting said shaft at a pointspaced farther from said centrifuge than the first mentioned point, saidmember lying substantially in a plane passing vertically through theaxis of rotation and extending diagonally downward through said'aperture to said base, said second member having its side walls securedto the flanged portion of thefirst member and its lower end to saidbase.

7. Apparatus comprising a centrifuge having a shaft mounted for rotationon a substantially horizontal axis, in combination with a supportincluding a base, a first member mounted in a vertical position on saidbase and supporting said shaft at a point adjacent the centrifuge, saidmember being provided with a centrally located aperture, a second memberlying substantially in a vertical plane passing through the axis ofrotation and extending diagonally downward through the aperture in saidfirst member to said base and supporting said shaft at a point spacedfarther from said centrifuge than said first mentioned point, and athird member securing together the portions of the two first mentionedmembers extending above the aperture.

8. Apparatus comprising a centrifuge having a shaft mounted for rotationon a substantially horizontal axis, in combination with a supportincluding a base, a first member mounted in a vertical position on saidbase and supporting said shaft at a point adjacent the centrifuge, saidmember being provided with a centrally located aperture, a second membersupporting said shaft at a point spaced farther from said centrifugethan the first mentioned point, said second member lying substantiallyin a plane passing vertically through the axis of rotation and extendingdiagonally downward through said aperture to said base, said secondmember being secured to said first member at said aperture and to saidbase, and a third member for securing together the portions of the twofirst mentioned members extending above the aperture.

9. Apparatus comprising a centrifuge having a shaft mounted for rotationon a substantially horizontal axis, in combination with a supportincluding a base, a first member mounted transversely to the axis ofrotation and in vertical position on said base and supporting said shaftat a point adjacent the centrifuge, said member being provided with acentrally located aperture having flanged side walls, a secondsubstantially U-shaped member supporting said shaft at a point spacedfarther from said lentrifuge than the first mentioned point, said memberlying substantially in a plane passing vertically through the axis ofrotation and extending diagonally downward through said aperture to saidbase, said second member having its side walls secured to the flangedportion of the first member and its lower end to said base, and a. thirdmember for securing together the portions of the two first mentionedmembers extending above the aperturasaid third member having transverseflanges at each end thereof secured to first and second mentionedmembers respectively.

10. Apparatus comprising a centrifuge having a shaft mounted forrotation on a substantially horizontal axis, a pair of bearings for saidshaft, and a support for saidbearings including a base, a first membermounted transversely to the axis of rotation and in a vertical positionon said base and supporting one of said bearings at a point adjacent thecentrifuge, said member being provided with a centrally located aperturehaving flanged side walls, a relatively narrow substantially U-shapedmember lying substantially in a plane passing vertically through theaxis of rotation supporting the second of said bearings at a pointspaced farther from said centrifuge than the first, said second membercomprising a vertically extending portion supporting said bearing, anintermediate diagonal portion extending through said aperture and an enddiagonal porstantially at right angles to said intermediate portionhaving its side walls secured to said flanges and saidend portion beingsecured to the base, and a third member for securing together the upperportion of the first member and the intermediate portion of the second,said member having a vertically extending portion provided withtransverse flanges secured to said first mentioned member and a diagonalportion lying substantially at right angles to said intermediate portionand provided with a transverse flange secured to said intermediateportion.

11. Apparatus comprising a centrifuge having a shaft mounted forrotation on a substantially horizontal axis, in combination with asupport for said shaft including a base, means including a memberextending transversely to the axis of rotation and mounted verticallynear the rear of said base and supporting said shaft adjacent the rearend of the centrifuge, and means including a relatively narrow memberextending diagonally downward to the front of said base in a planepassing vertically through the axis of rotation and supporting the shaftat a distance farther from the rear of the centrifuge than said firstmentioned member.

12. Apparatus comprising a centrifuge having a shaft by which it isrotated in combination with a support for the shaft including a firstmember substantially perpendicular to the axis of rotation mounted onsaid base and supporting said shaft adjacent the centrifuge, and asecond member lying substantially in a plane passing through the axis ofrotation and perpendicular to the base and extending diagonally downwardbetween the sides of the first member to said base and supporting saidshaft at a point spaced farther from the centrifuge than the firstmentioned point.

13. Apparatus comprising a centrifuge having a shaft at one end,spaced-apart bearings for said shaft and means including a motor, apulley on said shaftbetween said bearings, a pulley driven by the motorshaft and belt means for transmitting power from one pulley to theother, in combination with a support including a' base, a member mountedsubstantially perpendicular to the base and supporting a bearingadjacent the centrifuge, said member being provided with a substantiallycentrally located aperture and with a second aperture located below andto one side of said first mentioned aperture, a second member extendingvertically downward in spaced relationship with said first member, thendiagonaily downward through said first mentioned aperture to the baseand supporting the other 01 said pair of bearings, said motor beingmounted on said base below and to one side of said centrifuge and havinga driving connection to said second mentioned pulley extending throughthe second mentioned aperture. 1

14. Apparatus of the type described including,

10 in combination, a base, a vertically extending apertured supportmounted near the rear of said base carrying a shaft bearing, a secondsupport secured to the front of said base and having an inclined portionpassing through and another portion extending upward behind thefirst-mentioned support and carrying a second bearing aligned with thefirst, a third support extending upwardly at the front 01' said base, astationary receptacle mounted between the first and third supports, acentrifuge within said receptacle having a shaft secured to andprojecting from its end wall, said shaft being journaled in saidheatings, and means for driving said shaft.

ANDREW 0; McCOLLUM. VICTOR. J. rovn'rr.

CERTIFICATE OF CORRECTION. Patent No. 2,190,155. 4 February 15, 191.10.ANDREW 0. nccoLLun, ET AL.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 5,sec-- ond colmn'n, line 22-25, for "porstantially at right angles tosaid intermediate" read portion extending to said base, saidintermediate; and that the said Letters Patent should be read with thiscorrection therein that the same may conform to the record of the casein the Patent Office.

Signed and sealed this 2nd da of April, A. D. l9b0.

Henry Van Arsdale, Acting Commissioner of Patents.

